Patents-Review.com
ClassID:

218371 ⎘

H02P21/04 - CPC Classification

Classification description:

Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for very low speeds

Recent Application in this class:
#1
20250158549
2025-05-15

Motor drive system and corresponding method

 #2
20230421088
2023-12-28

DOUBLE-REFERENCE PULSE-WIDTH MODULATION FOR TORQUE MINIMIZATION OF AC MACHINES

 #3
20210075354
2021-03-11

Virtual voltage injection-based speed sensor-less driving control method for induction motor

 #4
20200031207
2020-01-30

Torque current limiting vector control system and method for window regulator brushless motor

 #5
20200007055
2020-01-02

Starting method and apparatus for permanent magnet synchronous motor, power system, and unmanned aerial vehicle

 #6
20190386596
2019-12-19

SHEET CONVEYING APPARATUS, DOCUMENT READING APPARATUS AND IMAGE FORMING APPARATUS

 #7
20190186480
2019-06-20

Closed loop torque compensation for compressor applications

 #8
20190109557
2019-04-11

Electric motor system

 #9
20180358913
2018-12-13

MOTOR CONTROL APPARATUS, SHEET CONVEYANCE APPARATUS, DOCUMENT FEEDING APPARATUS, DOCUMENT READING APPARATUS, AND IMAGE FORMING APPARATUS

 #10
20180287526
2018-10-04

Control device of synchronous electric motor, integrated motor system, pump system, and positioning system

 #11
20180254729
2018-09-06

Inverter control apparatus

 #12
20180183367
2018-06-28

Starting method and apparatus for permanent magnet synchronous motor, power system, and unmanned aerial vehicle

 #13
20180069494
2018-03-08

Sensorless commutation method

 #14
20170288591
2017-10-05

Apparatus for correcting current reference

 #15
20170288586
2017-10-05

Variable magnetization machine controller

 #16
20160365819
2016-12-15

Motor control device and motor control method

 #17
20160261221
2016-09-08

Method for actuating a brushless motor

 #18
20150381090
2015-12-31

SENSORLESS SYSTEM AND METHOD FOR DETERMINING MOTOR ANGLE AT ZERO OR LOW SPEEDS

 #19
20150326162
2015-11-12

Apparatus for controlling induction machine

 #20
20150084575
2015-03-26

Angle/frequency selector in an electric motor controller architecture

 #21
20150064024
2015-03-05

Motor controller and turbo-molecular pump

 #22
20150028793
2015-01-29

Motor control apparatus

 #23
20140062375
2014-03-06

Control apparatus for three-phase rotary machine

 #24
20140062353
2014-03-06

Rotor position estimating device, electric motor control system and rotor position estimating method

 #25
20140049197
2014-02-20

Control apparatus for AC motor

 #26
20140042940
2014-02-13

Method and apparatus for control of electrical machines

 #27
20130243625
2013-09-19

Synchronous electric motor drive system

 #28
20130193896
2013-08-01

Method and apparatus for operating an electrical drive system

 #29
20130009586
2013-01-10

Inverter device and electric motor drive system

 #30
20120217909
2012-08-30

Synchronization of position and current measurements in an electric motor control application using an FPGA

 #31
20120217908
2012-08-30

Method and system for controlling an electric motor at or near stall conditions

 #32
20120206075
2012-08-16

Power inverter and electric power steering controller

 #33
20110297475
2011-12-08

Motor control device and electric power steering device

 #34
20110204831
2011-08-25

Drive device for alternating current motor and electric motor vehicle

 #35
20110148334
2011-06-23

Method and arrangement for controlling permanent magnet synchronous machines

 #36
20110118940
2011-05-19

Motor control unit and vehicle steering system

 #37
20110098888
2011-04-28

Motor control device and vehicle-steering device comprising same

 #38
20110089876
2011-04-21

Fail-safe controls for electric traction drive systems

 #39
20110089875
2011-04-21

Limp home operational mode for an electric vehicle

 #40
20110062902
2011-03-17

Method and apparatus for low speed permanent magnet motor operation

 #41
20110012544
2011-01-20

Vector controlled motor drive system implementing pulse width modulated (PWM) waveforms

 #42
20110005855
2011-01-13

Motor controller and electric power steering system

 #43
20110001441
2011-01-06

Motor control unit and vehicle steering apparatus

 #44
20100327789
2010-12-30

Sensorless control of salient-pole machines

 #45
20100117587
2010-05-13

Method for field-oriented operation to zero speed of an encoder-less asynchronous machine

 #46
20100066284
2010-03-18

Drive system of synchronous motor

 #47
20090256517
2009-10-15

WEIGHTED FIELD ORIENTED MOTOR CONTROL FOR A VEHICLE

 #48
20090251082
2009-10-08

Controller for AC rotary machine

 #49
20090234538
2009-09-17

Method and apparatus for controlling electric power steering system

 #50
20090190903
2009-07-30

Motor controller and vehicular steering system using said motor controller

 #51
20090128081
2009-05-21

Electric steering system

 #52
20080290826
2008-11-27

Motor controller

 #53
20080201041
2008-08-21

CONTROL DEVICE FOR ELECTRIC POWER STEERING APPARATUS

 #54
20080197800
2008-08-21

Reduction of subharmonic oscillation at high frequency operation of a power inverter

 #55
20080191655
2008-08-14

Motor controller and electric power steering system

 #56
20080185983
2008-08-07

Motor controller and electric power steering apparatus

 #57
20080167779
2008-07-10

Motor controller and electric power steering system

 #58
20080018291
2008-01-24

Controller for motor

 #59
20070262744
2007-11-15

Method and apparatus for controlling an electric motor using star voltage modulation

 #60
20070120520
2007-05-31

Motor driving device and automobile using the same

 #61
20070063667
2007-03-22

Driving device of motor

 #62
20070018603
2007-01-25

Method for the no-transmitter speed determination of an asynchronous machine

 #63
20070007072
2007-01-11

Controller for electric power steering device

 #64
20060145652
2006-07-06

Motor drive controlling device and electric power-steering device

 #65
20060097702
2006-05-11

Position-sensorless control of interior permanent magnet machines

 #66
20060055362
2006-03-16

Control system for permanent magnet synchronous motor and module

 #67
20050189902
2005-09-01

Direct control of an induction motor

 #68
20050166686
2005-08-04

Torque direction detecting device for brushless motor

 #69
20050151502
2005-07-14

Position sensorless drive for permanent magnet synchronous motors

 #70
20050146306
2005-07-07

Sensorless controller of AC motor and control method

 #71
20050125124
2005-06-09

Power-assisted steering system

 #72
20050093505
2005-05-05

Motor driving system